XRP is third biggest crypto in the world by market capital.
It is not performing yo-yo style ups and downs like ETH and BTC has been in the past. It is a stable crypto.
I cannot agree that XRP is stable, it was the most pump coin in 2017 but it's only carrying $.40 price now while it's ATH was $4 if I'm not mistaken.
It has its pump and dump in the past also, nothing is really stable in this market IMO.